There are a few things to take into consideration, as I see it.
--what Jesus
SAID on the day that
the 69 Weeks [total] were
concluded (Palm Sunday, just before the Cross later that same week): "
41 And as He drew near, having seen
the city, He wept over
it,
42 saying, “If
you had known in this day, even
you, the things for peace!
But now they are hidden from your eyes." [does that count as a
"hardening/blindness" Rom11:7,25]
--I believe it was at some point during His earthly ministry that "the kingdom
of the heaven
s is at hand"
ceased being said (and I fairly agree with crossnote that that was around the Matt13-15 mark; See especially
MATTHEW 13:13-16 and note especially "why" [when asked by His disciples, about the others] He was "speak[ing] unto THEM" [the others] in parables v.10,11,13-16)
--that which
Ephesians 1:20-23 WHEN (as to the existence of "the Church WHICH IS HIS BODY") seems to indicate a particular time frame, wouldn't you say?
--other things I thought of, but will leave it at that, for now... = )
[Paul was given the task of unfolding the "doctrine" concerning "the Church which is His body" but this doesn't indicate its STARTING point]